The magnetic field at the center of a 0.50-cm-diameter loop is 2.9 mt . part a what is the current in the loop? express your answer in amperes. i i = nothing a submitrequest answer part b a long straight wire carries the same current you found in part a. at what distance from the wire is the magnetic field 2.9 mt ? express your answer in meters. l l = nothing m submitrequest answer provide feedback next